chore: remove código morto e padroniza scripts e CI

server/package.json

@@ -7,7 +7,8 @@
   "scripts": {
     "dev": "tsx src/index.ts",
     "build": "tsc -p tsconfig.json",
-    "start": "node dist/index.js"
+    "start": "node dist/index.js",
+    "typecheck": "tsc -p tsconfig.json --noEmit"
   },
   "dependencies": {
     "@fastify/cors": "^11.2.0",